Sectional metal door frames



p 10, 1953 w. M. LEESER 3,103,263

SECTIONAL METAL 000R FRAMES Filed March 17, 1961 4 Sheets-Sheet 1 A TTOENE Y5.

Se t. 10, 1963 w. M. LEESER SECTIONAL METAL DOOR FRAMES 4 Sheets-Sheet 2Filed March 17, 1961 IN V TOR. m

H7 TUBA/5Y5 Sept. 10, 1963 w. M. LEESER SECTIONAL METAL DOOR FRAMES 4Sheets-Sheet 3 Filed March 17. 1961 Arron/5x5.

Sept. 10, 1963 w. M. LEESER SECTIONAL METAL DOOR FRAMES 4 Sheets-Sheet 4Filed March 17. 1961 United States Patent 3,103,263 SECTIONAL METAL DOORFRAMES Werner M. Leeser, Cincinnati, Ohio, assignor to The SteelcraftManufacturing Company, Rossmoyne, Ohio, a corporation of Ohio Filed Mar.17, 1961, Ser. No. 96,545 3 Claims. (Cl. 189-46) This invention relatesto hollow sheet metal door frames, side light frames, and multiple doorframes, and is directed particularly to a sectional frame structurewhich may be installed more rapidly and conveniently than is possiblewith conventional metal frames of this character.

One of the primary objectives of the invention has been to provide animproved frame anchorage structure or connector which is adapted to beinserted into the hollow frame section and locked in place therein by awedging action, adapting the frame sections to be mounted securely andin a convenient manner in the door opening of a wall structure, oradapting the frame section to be connected securely to an adjoiningframe section in the event that a multiple door frame is installed inthe wall structure.

Generally speaking, the door frame sections to which the presentinvention is addressed, are fabricated from sheet metal, the sectionsbeing substantially channelshaped in cross section, providing an openside having opposed, inturned marginal lips or flanges. The open side ofeach section is presented to the marginal portion of the wallsurrounding the door opening when the frame is installed. In the case ofa double or multiple door frame, or a side light frame, the open side ofthe adjoining frame sections are presented to one another.

Each anchorage device generally comprises an anchor plate formed ofsheet metal and adapted to be inserted within the hollow frame memberfrom an open end thencof and to be clamped at selected points along thelength of the frame member by a wedging action. For this purpose, theopposite ends of the anchor plate are provided with limbs or flangeswhich project upwardly and downwardly, and which are adapted to engagethe opposite sides of the channelshaped frame section so as to Erictionally clamp the anchorage device at its selected position within theframe section.

As the anchor plates are inserted, they are held in a canted positionwith respect to the frame section to provide clearance. At its selectedlocation along the frame section each anchor plate is rotated to aposition at right angles to the section, causing the sides of thesection to he sprung apart, slightly by the upwardly and downwardlyrojecting flanges at opposite ends of the anchor plate. The upwardly anddownwardly projecting end flanges pro vide clearance when the anchorplate is canted; they also act as stops limiting the turning motion whenthe plate is rotated to wedging position. The anchor plate is confinedin a positive manner within the section by the marginal lips at the openside of the frame section, which overlie the inner edge of the anchorplate.

The frame sections are cut to length to provide the vertical jambmembers and head member of the door frame, the adjoining upper endsbeing mitered to provide the joint between the jambs and head at the topof the frame. The anchorage devices are inserted in the jamb sectionsand head section prior to erection and each includes means forattachment to the studding or core of the wall structure before plasteris applied to the wall surfaces. After attachment, the plaster coatingof the wall adjacent the door opening conceals the attachment means, themarginal or inturned lips being at least partially embedded in theplaster to provide a neat, trim appearance.

A further objective of the invention has been to provide ice severaldifferent types of anchor devices of the same basic design and principleof operation, which may be interchangeably applied to the hollow framesections, whereby a given door frame may be mounted within the openingof walls of various types of construction, such as wood stud, metal studand other types which are used in interior and exterior walls andpartitions.

By virtue of the present connector device, the required frames may beconveniently cut to size in the field from straight lengths of hollowframe material, or the supplier may furnish the sections cut to length.In either event, the inventory of the supplier may be substantiallyreduced since the door frames (or side light frames) for the varioustypes of wall construction can be furnish-ed simply by applying theappropriate anchorage devices or connectors. Thus, if the frame is to beinstalled in a wall constructed with wood studding, then the framingsections, together with a number of anchor devices arranged to beattached to wood studding are furnished to the user. If a similar frameis intended, for example, for a Wall of metal stud construction, thenthe same basic frame sections are supplied, together with anchor devicesappropriate for attachment to the steel studding.

A further objective of the invention has been to provide a connectorplate adopted to attach adjacent frame or jamb sections to one anotherby a snap-in connection so as to assemble double or multiple door framesof side light frames in a simple manner, utilizing the same framesections for the jamb members and head members of the frames.

Described briefly, this form of the invention comprises an anchor platehaving wedging flanges extending upwardly and downwardly at oppositeends, utilizing the wedging principle described above. In assembling themultiple door frame, the anchor plates are inserted into one jambsection, and in order to provide the snapin engagement with the matingjamb section of the double frame, each anchor plate is notched toreceive the inrturned lips of the jamb sections, with an edge portion ofthe plate projecting outwardly beyond the open side of the jamb section.This projecting portion of the plate includes a curved cam sectionleading to the notch. In erecting a double frame, for example, thesections, of one frame, comprising jamb and head members may be se curedwithin the door opening of the wall structure as outlined above,including the installation of one of the jamb sections at the center ofthe opening, with the connector devices installed therein. The open sideof the mating jamb section is now presented to the open side of themounted jamb section, and one of its inturned lips is engaged in thenotches of the connector devices. Thereafter the mating jamb section ispivoted in a direction to bring its second inturned lip to engagementwith the curved cramming surface of the connector plates, thus expandingthe jamb section and causing its second inturned lip to snap into thesecond notch of the connector plates, thereby locking the two adjoiningsections securely together.

The various features and advantages of the invention will be moreclearly apparent to those skilled in the art from the followingdescription taken in conjunction with the drawings.

In the drawings:

FIGURE 1 is a fragmentary perspective view showing one of the anchordevices of the present invention mounted in a metal door frame sectionand secured to a wood partition stud.

FIGURE 2 is a view similar to FIGURE 1, showing a slightly modified formof the invention.

FIGURE 3 is a fragmentary perspective view of a typical installationillustrating the location of the several anchoc devices of the jamb andhead members.

FIGURE 4 is a perspective view similar to FIGURE 1,

3 showing a modified anchor device which is adapted to attach the doorframe to the metal studs of a wall structure.

FIGURE 5 is a fragmentary perspective view, showing a modified anchordevice which is adapted to attach the frame to the lath board or core ofa plastered walls.

FIGURE 6 is a fragmentary perspective view showing a typicalinstallation of the frame with respect to the plastered wall, utilizingthe anchor plates of FIGURE 5.

FIGURE 7 is a fragmentary face view, showing the mode of installing theanchor device in one of the frame sections.

FIGURE 8 is a view similar to FIGURE 7, showing the anchor device inplace within the frame section.

FIGURE 9 is a sectional viewttaken along line 9--9 of FIGURE 8, furtherillustrating the installed anchor device.

FIGURE 10 is a sectional view taken along line 10-10 of FIGURE 8,further illustrating the installed anchoring device.

FIGURE 11 is a fragmentary section as viewed along line 11-11 of FIGURE9, showing the anchor device spot-welded within the framing member.

FIGURE 12 is a fragmentary front view of a double door frame utilizingthe anchor devices and connectors of the present invention.

FIGURE 13 is a sectional view taken along line 1313 of FIGURE 12,illustnating one of the connectors and anchor plates of the double framestructure.

FIGURE 14 is a fragmentary perspective view, illustrating the manner ofjoining the two center jamb members of a double door frame of the typeshown in FIG- URE 12.

FIGURE 15 is a plane View, further illustrating the snap-in action ofthe mating jamb member.

FIGURE 16 is a view similar to FIGURE 15, but showing the jamb snappedin place.

Frame Installation (Wood Stud) Referring to FIGURE 1, the anchor device,which is The jamb member 3 is of the double rabbet type, comprising adoor stop 4 delineating rabbets 55 adapting the door to be mounted forswinging motion relative to either side of the stop and to interflteither rabbet. The side pieces or limbs 6-6 of the channel-shaped fnamesection 3 include inturned lips 7-7 or flanges which coact with theanchor plate 1 in attaching the frame to the W121 structure, asexplained later.

In constructing the partition or wall, the anchor devices 1, are wedgedin place within the hollow framing members at appropriate points alongtheir length, as explained below, then the usual plaster lath or lathboard is attached to the studs at opposite sides. The plaster is thenapplied to the lath in sufficient thickness to embed the lips 7-7, suchthat the sides 66 are flush, or at least nearly flush, with the surfaceof the plastered wall surface.

Described in detail. the anchor device 1 is fabricated from a sheetmetal blank having a rectangular anchor or connector plate 8 dimensionedto fit snugly within the frame section 3 through a wedging action, asshown in FIGURES L10. For this purpose, the opposite ends of the plate 8are provided with legs or flanges 10 and 11. the flange 10 projectingupwardly and the flange 11 projecting downwardly with respect to theplate 8. As shown in FIGURE 7, the flange 10 and 11 extend outwardly atan angle which is somewhat greater than a right angle,

for example an angle of degrees, with respect to the plane of plate 8.Thus, the angle indicated at A (FIG- URE 7) represents a true rightangle with reference to plate 8, while the angle B represents theoutward divergence of the flange from true right angular relationshipaids in wedging the plate to its clamped position and also adapts theflanges 10 and 11 to be compressed slightly as the plate is frictionallylocked within the frame section. These flanges act as stops, limitingthe turning motion of the plate as it is wedged in place, as explainedbelow.

The plate 8 further includes legs or flanges 12 and 13 formed along itsouter edge, also projecting upwardly and downwardly from the plate 8.These flanges also extend outwardly at an angle greater than a rightangle with respect to the plate, as indicated at C in FIGURE 10. Thisangular relationship allows the flanges 12 and 13 to flex slightly andfacilitates the insertion of the plate into the frame section.

The inner edge of the plate 8 includes a downwardly depending flange 14(FIGURE 7) which includes outwardly projecting ears 1S1S, which arespaced apart to embrace the opposite sides of the Wood stud 2, as shownin FIGURE 1. The ears 14 each include an aperture to receive a nail 16which is driven into the stud so as to attach the anchor piece and framesection securely to the wall structure.

As noted earlier, the door frame sections 3 may be furnished to the userin the form of straight lengths to be cut and fitted to the door openingin the field. On the other hand, the sections may be cut to size by thesupplier; in either event, the upper ends of the jamb members and theopposite ends of the head member are mitered one another. The anchorplates are conveniently and quickly installed within the framing memberswithout special tools, the anchor plate being slipped into an end of theframe section while being held in a canted position (FIGURE 7), suchthat end flanges 10 and 11 are spaced for clearance with respect to theinternal surfaces of the section. In this canted position, the severalanchor plates are shifted longitudinally to the desired points along thelength of the frame member. As each anchor plate is located, it islocked in place by turning the anchor plate to a right angular position(FIGURE 8) with respect to the frame section; this can be accomplishedeither by hand or by striking one end portion lightly with a hammer, asindicated by the arrow in FIG- URE 8. The flanges 10 and 11 act as stopsto limit the degree of turning motion to the right angular positionshown in this view. This turning motion forces the end flanges 10 and 11into frictional engagement with the walls 6-6 of the frame section toclamp the anchor plate in place.

As shown in FIGURE 3, by way of example, three of the anchor plates maybe installed in the jamb members D and two in the head member E. Afterinsertion of the anchor plates, the jamb and head members are placed inposition with respect to the studs which delineate the door opening,then the nails 16 are driven in place so as to permanently attach theframe members to the studs. The lath and plaster is then applied toconceal the cars 15 and to integrate the metal door frame with the wallstructure.

As best shown in FIGURE 1, the body plate 8 is provided with a pair ofapertures l919 spaced inwardly from the opposite ends of the plate. Thepurpose of these apertures is to facilitate the application of groutingmaterial for sound-deadening of the metal door frame. In other words, asthe wall is constructed, the plasterer fills or partially fills theinside of the hollow frame with plaster in the flowable state. Theapertures 19 allow the plaster to flow through the anchor plates fromthe top to bottom, so as to pack solidly in the jamb members.

Single Rubber Frame The anchor device indicated generally at 17 in FIG-URES 2 and 3, is similar in principle to the structure shown in FIGURE1, but is modified in size and shape to interfit a frame section 18having a reduced width. and modified shape, which is known in theindustry as a single rabbe-t frame. In this frame section, a stop 20 islocated to one side of the section and delineates a single rabbet 21,one of the sides or limbs 22 being flush with the side of the stop. Thisframe section is intended for partitions having a reduced width, whereinthe wood stud 23 is mounted at right angles to the position shown inFF"- URE 1. This type of wall construction is used, for ex ample, forclosets and other secondary partitions.

The anchor device 17 is provided with end flanges 24 24 which extendupwardly and downwardly, as explained above, and which reside at anangle greater than 90 degrees to the plane of the anchor plate 25. Aflange 26 extends downwardly from the inner edge of plate and includesears 2727 spaced to embrace the opposite sides of the stud 23. Theanchor plate is attached to the stud by nails 28 passing throughapertures formed in the ears 27. The outer edge of plate 25 includes anoffset portion 30 having a downwardly projecting flange 31 which engagesthe internal surface of the stop 20. An upwardly turned flange 31aengages the internal surface of the rabbct 21.

The anchor plate 25 is inserted into the frame member 2% in a cantedposition, as explained above with reference to FIGURE 7, and isfrictionally locked in place at the required locations, as indicated inFIGURE 3. The upper ends of the jamb members D and the meeting ends ofthe head member E are mitered as at 32 to interfit one another. In theexample illustrated, three of the anchor plates 17 are applied to eachjamb member D and two are inserted in the head member E. The anchorplates for the head member are attached with nails 23 to the wood header33, similiar to the attachment of the jambs to the vertical studs 23, asshown in FIGURE 2. After installation of the door frame, the plasterlath and plaster are applied to opposite sides of the studs as indicatedat 29.

Although in most instances, it is desirable to wedge the anchor platesinto the frame sections in the field, they may be installed permanentlywithin the frame section by spot welding, as indicated at 39 in FIGURE11. In this construction, the anchor plates are located and wedged inplace at the desired locations, then the spot welds 39 are applied withsuitable electrodes which engage and clamp the flanges of the anchorplate to the surface of the frame section. The arrangement of FIG- URE11 represents the double rabbet section shown in FIGURE 9; however, itwill be understood that the anchor plate for the single rabbet frame(FIGURE 2) may be similarly spot welded.

Steel Stud Anchor Plate The anchor plate 34, which is shown in FIGURE 4,is intended for use with steel studding 35 in place of wood studs. Themetal studs comprise pairs of vertical rods 36 joined by diagonal trussmembers 37 for reinforcemerit. The anchor plate 34 is similar to theplate 1 (FIG- URE 1), including end flanges 10 and 11, and flanges 12and 13 along the outer edge of the plate. However, in this case, theflange l4 and cars 15 have been omitted from the inner edge of theplate. In order to attach the plate to the studs 34, holes 3838 areformed in the plate 8 to receive wires 40 which are passed through theholes and around the studs 35, the ends of the wires being twisted as at41 to draw the edge of the plate firmly against the studs. In order toclamp the anchor plate firmly, the inner edge of the plate is notchedout as at 42, the notches being spaced to embrace the steel studding 35.

During erection, the anchor plates are located and wedged in place inthe same manner as described above with references to FIGURES 7 and 8,and then the wires 4!] are applied. The steel studs are covered withlath (not shown), usually of metal, the plaster being applied after theframe is installed, as explained above. Although the frame section 3shown in FIGURE 4 is of the double rabbet type, it will be understoodthat the steel stud anchor plate 34 may be furnished for single rabbetframes as in FIGURE 2, by changing the size or configuration of theplate.

Plaster Wall Frame A nchomge FIGURE 5 illustrates another form of theanchor plate which is intended for mounting a single rabbet frame withrespect to a plastered wall of reduced thickness, similar to that shownin FIGURE 2. In FIGURE 5, however, the wood studs are omitted and thewall comprises a core or lath board 43 covered with plaster 44 onopposite sides. The anchored plate 45 is similar to plate 17 (FIG- URE2) including end flanges 2424 and side flanges 31 and 31a. In this case,the inner edge of anchor plate 45 includes a pair of lugs 46-46, eachhaving an aperture 47 adapted to receive a wire 48 which is passedthrough the edge portion of the latch board 43, the end portions of thewire being twisted together as at St to draw the plate firmly againstthe edge of the lath board. The anchor plates 45 are wedged in placewithin the door frame sections and anchored to the lath board 43 beforethe plaster coating 44 is applied. such that the frame section is atleast partially embedded in the edge portion of the plaster.

In some forms of wall construction of this general type, the edge of thelath board may include a steel channel (not shown) which interfits thelugs 46 for reinforcement purposes. In other instances, the wallstructure may include vertical channel members which extend Within thejamb members. To accommodate this type of construction, each anchorplate 45 is provided with a channelshaped opening 51 to receive thechannel member. It will be understood that in this instance, the anchorplates necessarily are first installed within the frame section andwedged in place, adapting the channel to be slipped through the severalanchor plates before the frame sections are applied to the door opening.

Double F mme Connector FIGURES 12 and 13 represent a double door frameinstallation comprising two frames 52 and 53 installed in side-by siderelationship in a partition or wall structure 54, utilizing a snap-inconnector, indicated generally at 55 (FIGURE 14) for joining the matingjarnbs, which are indicated at 56 and 57. It will be understood at thispoint, that the connector 55 may also be utilized in mounting one or apair of side lights (not shown) alongside of a door, or pair of doors inplace of a double door arrangement which is illustrated. The connector55 is similar to the anchor plate 1 (FIGURE 1), or its modified form forsingle rabbet doors, the connector being located and clamped in place bya wedging action similar to plate 1.

Described with reference to FIGURE 12, the right hand frame 52 comprisesa frame section 3 forming a jamb which is joined to the framing stud 2by an anchor plate I, as described with reference to FIGURE 1. A headmember is similarly attached to the wood header; the left hand jamb 57forms a part of the central double jamb 65. A door 58 is hingedlyconnected as at 59 (FIG- URE 13) to the right hand jamb member 3. Theleft hand frame 53 also comprises a jamb member 3, including a door 60hingedly connected to the left jamb memher 3. The jarnb members 56 and57, which form the double jarnb 65, at the center of the double frame,are joined together by a series of connectors 55 located at spacedpoints within the mating frame sections.

Each connector 55 comprises a sheet metal plate 62, which is acounterpart of plate 8, including wedging flanges It} and 11 at oppositeends and having flanges l2 and 13 at the outer edge of the plateengageable with the internal surface of the double rabbet frame, asexplained with reference to FIGURE 1. In order to join the mating framesections 56 and 57, the plate 62 is notched as at 63 and 64 to receivethe inturned lips 77 of the frame sections, the width of the notchesbeing somewhat greater than twice the thickness of the sheet metalsections, such that the doubled lips 7 of the connected sections (FIGURE16) may interfit the notches.

In installing the double frame, the side jamb and header members may befirst attached to the studding structure by the anchor devices 1, thenthe double jamb 65 may be installed at the center of the opening. Forthis purpose, the connectors 55 are first installed in section 56.Thereafter, the mating jamb section 57 is located in position with oneof its inturned lips is inserted in the notch 64. The frame section isthen pivoted, as shown by the arrow in FIGURE 15, causing the oppositelip 7 to cam against the curved edge portion 66 leading to the notch 63.As the lip follows the curve 66, the side or limb 6 of the frame sectionis sprung outwardly, as indicated by the arrow in FIGURE 15, until thelip reaches the notch 66. At this point, the lip snaps into the notch(FIGURE 16), thereby connecting the second jamb section securely infacial engagement with the first section. The upper and lower ends ofthe double jamb 65 are attached by suitable fixtures (not shown) whenthe assembly is installed at the center of the door opening.

Having described my invention, I claim:

1. A metal frame structure for a door or the like comprising, aplurality of hollow one piece sheet metal frame sections having an openside and adapted to be anchored to an adjacent structure, each of saidsections being generally channel-shaped in. cross section. said sectionhaving opposed yieldable side walls, a pair of inturncd lips projectingfrom said sidewalls toward one another and delineating said open side,an anchorage device positioned within said hollow channel-shaped sheetmetal frame section, said anchorage device comprising an anchor plateformed of sheet metal and being of one-piece construction, said anchorplate being configurated to fit within the hollow frame section, arespective wedging flange projecting from the opposite ends of saidanchor plate substantially at right angles to the plane of the plate,said flanges extending respectively in opposite directions with respectto the plane of the plate, and attachment means on said. anchor plateprojecting outwardly from the open side of the frame section betweensaid inturned lips and spaced therefrom, said attachment means adaptedto anchor the frame section to an adjacent structure. said anchor plateinserted within the hollow frame section in a transversely cantedposition relative to the longitudinal axis of the frame section toprovide clearance between the said wedging flanges and the opposedyieldable side walls of the sheet metal frame section, said plate turnedfrom the canted position to a generally right angular position relativeto the axis of the frame section, whereby the opposite ends of theanchor plate are brought into engagement with. said yielda ble sidewalls to spring the same apart from one another, said wedging flangesseating against the yicldable side walls thereby to locate the anchorplate in a position substantially at right angles to the longitudinalaxis of the frame section and shifting the wedging flanges intofrictional engagement with the side walls with said inturned lipsoverlying the anchor plate and confining the same within the framesection at a selected position along the frame section.

2. A double jarnb structure for a door frame or the like comprising, apair of frame sections, each of said sections being formed of sheetmetal and being of one piece construction, said frame sections beinggenerally channelshaped in cross-section and having yieldable side wallsincluding opposed inturned lips delineating an open side of saidsection, a plurality of connector devices mounted with-in the first ofsaid frame sections, each of said con ncctor devices including an anchorplate formed of sheet metal and being of one-piece construction, saidanchor plate interfitting the interior of said first section, each ofsaid anchor plates having attachment means thereon projecting outwardlyfrom the open side of the first framing section, said attachment meanshaving respective wedging flanges on opposite ends thereof extendingrespectively in opposite directions with respect to the anchor plate,said anchor plate having respective notches at opposite ends thereof andhaving a cam portion projecting outwardly beyond the open side of thesection, said lips being engaged in said notches and confining theanchor plate within the first section, said wedging flanges beingdisposed substantially at right anges to the plane of the plate, saidanchor plate adapted to be inserted within the first of said framesections in a transversely canted position relative to the longitudinalaxis of the section to provide clearance between said wcdging flangesand the yielda'ble side walls of the frame section, said anchor plateadapted to be turned from the canted position to a generally rightangular posi tion relative to the first frame section, whereby theopposite ends of the anchor plate are brought into engagement with saidyieldable side Walls to spring the same apart from one another, saidWedging flanges adapted to seat against the yieldable side walls,thereby to locate the anchor plate in a position substantially at rightangles to the longitudinal axis of the first section and to shift thewedging flanges into frictional engagement with the yieldable side wallsof the first section, said cam portion of the anchor plate having acurved camming surface leading outwardly to one of said notches, thesecond of said frame sections having an open side presented to the openside of the first section, with the inturncd lips of the second sectionengaged in said notches, thereby securing the two sections together,said camming surface adapting the second section to be joined to thefirst section by forcing the two sections toward one another with a lipof the second section engaged against said camming surface, whereby saidcamrning surface springs the side walls of the second section apart fromone another, adapting the lip thereof to snap into engagement with saidnotch and in facial relationship with the lip of the first section.

3. A connector device for securing a second hollow frame section to afirst section to form a double jam, each of said sections being formedof one-piece yieldable sheet metal and being generally channel-shaped incross-section, each of said frame sections including yieldable sidewalls, said side walls having a pair of inturned lips delineating anopen side, said connector device comprising an anchor plate formed ofsheet metal and being of one-piece construction, said anchor plate beingconfigurated to interfit the interior of a first hollow frame section,said anchor plate having respective wedging flanges on oppositet endsthereof, said flanges projecting respectively in opposite directionsrelative to the plane of said plate, said plate having attachment meansadapted to project outwardly from the open side of the first framesection, said attachment means having a pair of notches formed in theopposite ends thereof, said notches being dimensioned to receive theinturned lips of said first and second frame sections, said anchor platehaving a cam portion projecting outwardly beyond said notches, one sideof said projecting portion having a curved camming surface leading fromthe edge of said cam portion outwardly to the notch, said anchor plateadapted to be inserted into the first hollow frame section in atransversely canted position with respect to the longitudinal axis ofthe section to provide clearance between the side Wcdging flanges andthe opposed yieldahle side walls of the first section, adapting theanchor plate to be shifted along the first section to a selectedposition, said. plate adapted to be turned to a generally right angularposition relative to said axis, whereby the opposite ends of the anchorplate are brought into engagement with said yieldable side walls tospring the same apart from one another, said wedging flanges adapted toseat against the yicldahle side walls, thereby to locate the anchorplate in a position substantially at right angles to the longitudinalaxis of the frame section and to shift the Wedging flanges intofrictional engagement with the yieldable side walls of the frame sectionwith the cam portion projecting from the open side of the first section,said cam surface adapting the second frame section to be joined to thefirst section by presenting the open face of the second 5 section to theopen face of the first section and forcing said sections toward oneanother, whereby the lip of the second section engages said cammingsurface to expand the section, adapting the lip to snap into said notchand into facial relationship with the lip of the second section. 10

References Cited in the fiie of this patent UNITED STATES PATENTS BaxterMay 21, Kiefer July 7, Miller Sept. 22, Mainieri Oct. 29, Rudisiil Juiy4,

FOREIGN PATENTS Austria May 25,

1. A METAL FRAME STRUCTURE FOR A DOOR OR THE LIKE COMPRISING, APLURALITY OF HOLLOW ONE-PIECE SHEET METAL FRAME SECTIONS HAVING AN OPENSIDE AND ADAPTED TO BE ANCHORED TO AN ADJACENT STRUCTURE, EACH OF SAIDSECTIONS BEING GENERALLY CHANNEL-SHAPED IN CROSS SECTION, SAID SECTIONHAVING OPPOSED YIELDABLE SIDE WALLS, A PAIR OF INTURNED LIPS PROJECTINGFROM SAID SIDEWALLS TOWARD ONE ANOTHER AND DELINEATING SAID OPEN SIDE,AN ANCHORAGE DEVICE POSITIONED WITHIN SAID HOLLOW CHANNEL-SHAPED SHEETMETAL FRAME SECTION, SAID ANCHORAGE DEVICE COMPRISING AN ANCHOR PLATEFORMED OF SHEET METAL AND BEING OF ONE-PIECE CONSTRUCTION, SAID ANCHORPLATE BEING CONFIGURATED TO FIT WITHIN THE HOLLOW FRAME SECTION, ARESPECTIVE WEDGING FLANGE PROJECTING FROM THE OPPOSITE ENDS OF SAIDANCHOR PLATE SUBSTANTIALLY AT RIGHT ANGLES TO THE PLANE OF THE PLATE,SAID FLANGES EXTENDING RESPECTIVELY IN OPPOSITE DIRECTIONS WITH RESPECTTO THE PLANE OF THE PLATE, AND ATTACHMENT MEANS ON SAID ANCHOR PLATEPROJECTING OUTWARDLY FROM THE OPEN SIDE OF THE FRAME SECTION BETWEENSAID INTURNED LIPS AND SPACED THEREFROM, SAID ATTACHMENT MEANS ADAPTEDTO ANCHOR THE FRAME SECTION TO AN ADJACENT STRUCTURE, SAID ANCHOR PLATEINSERTED WITHIN THE HOLLOW FRAME SECTION IN A TRANSVERSELY CANTEDPOSITION RELATIVE TO THE LONGITUDINAL AXIS OF THE FRAME SECTION TOPROVIDE CLEARANCE BETWEEN THE SAID WEDGING FLANGES AND THE OPPOSEDYIELDABLE SIDE WALLS OF THE SHEET METAL FRAME SECTION, SAID PLATE TURNEDFROM THE CANTED POSITION TO A GENERALLY RIGHT ANGULAR POSITION RELATIVETO THE AXIS OF THE FRAME SECTION, WHEREBY THE OPPOSITE ENDS OF THEANCHOR PLATE ARE BROUGHT INTO ENGAGEMENT WITH SAID YIELDABLE SIDE WALLSTO SPRING THE SAME APART FROM ONE ANOTHER, SAID WEDGING FLANGES SEATINGAGAINST THE YIELDABLE SIDE WALLS THEREBY TO LOCATE THE ANCHOR PLATE IN APOSITION SUBSTANTIALLY AT RIGHT ANGLES TO THE LONGITUDINAL AXIS OF THEFRAME SECTION AND SHIFTING THE WEDGING FLANGES INTO FRICTIONALENGAGEMENT WITH THE SIDE WALLS WITH SAID INTURNED LIPS OVERLYING THEANCHOR PLATE AND CONFINING THE SAME WITHIN THE FRAME SECTION AT ASELECTED POSITION ALONG THE FRAME SECTION.